On Tue, Aug 04, 2009 at 12:47:49PM -0400, Luis Useche wrote: > On Tue, Aug 4, 2009 at 12:14 PM, Darrin > Chandler<dwchand...@stilyagin.com> wrote: > > On Tue, Aug 04, 2009 at 11:30:44AM -0400, Luis Useche wrote: > >> On Tue, Aug 4, 2009 at 11:20 AM, Bret S. Lambert<bret.lamb...@gmail.com> > >> wrote: > >> > pkg_delete `pkg_info -t` will almost do what you're looking for ;) > >> > >> The problem with this command is that it will remove packages > >> installed for the end user. In my case, for instance, "pkg_info -t" > >> list zsh, vim, subversion and other. > > > > Brett gave you the pieces and this is UNIX, so it's just a tiny bit more > > work... > > > > # pkg_info -t | cut -d' ' -f1 > pkgs.before > > # pkg_delete <whatever> > > # pkg_info -t | cut -d' ' -f1 > pkgs.after > > # pkg_delete $(comm -13 pkgs.before pkgs.after) > > > > I guess your idea with this script is to find the differences between > the lists of packages with no dependents before and after deleting the > package <whatever>. > > This is really close but it is not there quite yet. Even with this > script, there could be situations where you end up deleting things you > don't want. For instance, let say you install xfce. After some time, > you decided to install some package X that depend on xfce and other > library L used only by X. When using your script, it will remove not > only L but also xfce (which you did not want to remove because you > installed it manually).
True > Besides, there is another problem with the script. If you imagine the > packages installed in the system as a tree of dependencies, you can > see that your script will only remove two levels of the branch you > want to delete. Example: X depends on Y that depends on Z: X -> Y -> > Z. In your script, X and Y will be removed but Z will not. True I was not thinking to solve the general case, but more to help with an immeditate need. > It seems like an additional information should be added to the package > database. A bit indicating if the package was installed manually by > the user (admin?) or not. Then, the package can only be deleted if the > the user explicitly say so as oppose to "automatic deletion as > dependency". This has been brought up many times before and a lot of people would like to see it (me too). I know some work has been done and some info is now kept, but this functionality isn't there yet. -- Darrin Chandler | Phoenix BSD User Group | MetaBUG dwchand...@stilyagin.com | http://phxbug.org/ | http://metabug.org/ http://www.stilyagin.com/ | Daemons in the Desert | Global BUG Federation
